Eventide ARGUS 3000 - Fuse Replacement; General; 3000 And 5000 Fuse Replacement

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Section 9 ["}
FUSE REPLACEMENT
9.1 General r^
The mother board contains a three amp pico fuse (series 255). This fuse can "blow" (open circuit) because of
an electronic problem or because of a transient on the power supply bus to the unit. If the failure is due to an 71
electronic problem, the unit needs to be returned to Eventide for repair. If the fuse failed because of a transient
condition, simply replace the fuse following the procedure outlined below.
NOTE '
If the wrong screw was replaced in the location where the red-marked screw belongs, then it is ; •
probable that the Bergquistpad was punctured. This would short the shielding in the power supply, '
and cause the fuse to blow. If this is the case, the unit must be returned to Eventide for repair.
You can test the fuse for continuity using a multi-meter to determine if it needs to be replaced.
The mother board has been coated by a moisture resistant substance, called conformal coating. This coating must |""
be scraped away in the area of the fuse in order to remove the old fuse. Use caution when removing this coating •
so as not to damage any traces or pads on the board, or any adjacent components.
The instructions for replacing the fuse in the 3000 and 5000 are given together. The instructions for replacing !
the fuse in the 7000 are given separately.
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NOTE ;
When removing the screws, take note of their location, as it is important that they are replaced «~i
correctly. :
9.2 3000 and 5000 Fuse Replacement '
The ordering part number for the 3-amp pico fuse is #316019. „
Soldering skills are required to perform this procedure.
The Argus 5000 has an additional board (database board) that the 3000 does not have. The instructions that \ <
follow take this into consideration.
Page 46 Argus Maintenance Manual Part #5006 July, 1993